Device for feeding rolls for end-grinding.



L R. HEI'M. I

DEVICE FOR FEEDING. ROLLS FOR END GRINDING. APPLICATION FILED JULY I3.1917.

Patented May 7, I918.

l/VI/E/V TOR LEWIS R. HEIM, OF DANBURY, CONNECTICUT, ASSIGNOR TO THEBALL AND ROLLER BEARING COMPANY, OF DANBURY, CONNECTICUT, A CORPORATIONOF CONNECTICUT.

DEVICE IIFOR FEEDING ROLLS FOR END-GRINDING.

menace.

Specification of Letters Patent.

. Patented May '7, T918.

Application filed July 13; 1917. Serial No. 180,459.

To all whom it may concern:

' Be it known that I, Lnwrs R. HEIM, a

citizen of the United States, residin at Danbury, county of Fairfield,State of ont necticut, have invented an Improvement in Devices forFeeding Rolls for End-Grinding, of which the following is aspecification.

This invention relates to grinding mechanism, and has particularreference to means whereby large numbers of small articles such asbolts, pins, bearing rollers, etc., may be accurately ground on one orboth ends, or may be circumferentially ground, with a minimum amount ofhandling. With this invention, the ends of bearin rollers may besimultaneously ground so t atthe rollers will be of uniform length, orheaded articles such asbolts may be ground on both ends to' so be ofuniform length or the head itself may be ground of uni-form length, asmay be desired. 'Numerous "other uses for such a mechanism are apparentwithout specific mention, and a preferred form of the invention will bedescribed herein.

'The invention comprises a magazine carrier which may be loaded byhandor automatically, and disposed adjacent one or more grinding wheels soas to successively carry projecting portions of the articles to be oundacross the grinding surface or sur aces. As shown herein, the mechanismcomprises tw grinding wheels with the car? rier dispose between andmechanically driven so as to simultaneously grind oppd site ends ofrollers for roller bearings, ut the invention contemplates thesubstitution of a stationar guide for one wheel in a case where it is ony desired to grind one end of the article, and in some instances, as inthe case of headed articles which are to be ound on the head, thecarrier itself per- Tdrms the functions of a guide.

In the accompanying drawings,

Figure 1 is an end elevation showing the complete assembly Fig. 2 is atop plan, v Fig. 3 is an end view seen from the left inFig. 1,

Fig. 4 is an elevation on an enlarged scale,

Fig. 6 is a detail view showing the manner of loading the carrier byhand.

an 1 represents the base provided with a 'the carrier will feed theblanks [properlg' to Fi 5 is a section onthe line 5-5 of Fig.

g I blanks substantially 1n line withthe grindstock-2 at each end, eachstock carrying a shaft 3 and rinding wheel 4. The stocks 2 are 1ndepenently adjustable so as to vary the d1stance between the grinding wheels4. As herein shown, the grinding wheels 4 have the grmding surfaces onthe side, but the invention is equally applicable to peripheral grindingwheels. The grinding wheels 4 are ad usted and driven in any desiredmanher not necessary to be shown herein.

The base 1 is provided with an upright standard 6 to which is bolted abracket 7 The bracket 7 carries a shaft 8 on which is rotatably mounteda carrier disk 9 having holes or pockets 10 to receive the rollers 11,'70 or bolts, or other articles as the case may be, and also having gearteeth 12 which mesh wlth the inion 13 mounted on shaft 14 ournaled inthe bracket 7 and driven by pulley 15. Mounted on the upper side of thebracket 7 above the shaft 8 and closely adjacent to the grinding wheels4 are guide, plates 16, having outwardly curved edges at-the entranceside as shown in Figs. 2 and 4. The guide plates 16'are separated by aso spacing piece 18, a distance apart] corresponding to the length orthickness of the rough blanks, and the flared or outwardly curved edgesof the guide plate provide a rearwardly tapering entrance to the guideafforded by said guide plates ,and thusserve to position the blanks inthe carrier so that the grinding wheels. Where si e grin ing wheels areused, it' is desirable to accurately to position the. blanks so thatonly their ends or projecting portions will come in contact with thegrinding wheels. If peripheral grinding wheels beused, it will beunderstood that the carrier shaft 8 will be normal at or nearly so tothe axes of the grinding wheels, instead of parallel thereto, as shownhereln.

The operation will be readily understood from the drawings in view ofthe foregoing ice description, it being understood that the Y grindingwheels rotate counter-clockwise, and the carrier rotates clockwise. Theoperator places the blanks in the magazine carrier before they enter theflared guide, not and the action of the guide is to position the ingfaces of the wheels. Owing to the difference of speed and direction ofmovement of the carrier and the grinding wheels, the

slower moving carrier provides the requisite resistance to accomplishthe grinding. Where both ends of the blanks are being simultaneouslyground, it will be seen that one wheel backs up the other, but whereonly one ished length of the blanksso that the blanks can revolve in thecarrier in the usual manner. The wheels can revolve in the samedirection, or oppositely at different speeds, as in my Patent 1,210,937,J an -2, 1917, in which case the slower moving wheel acts as .aregulating wheel.

,This invention can be made in the form of an attachment which canreadily be adapted to existing grinding machines and thereby increasingthe capacity thereof and enabling large quantities of small articles tobe ground to uniform lengths. Various modifications may be made in thestructure herein illustrated without departing from the scope of theappended claims.

What is claimed, is:

1. The combination with a grinding Wheel, of a rotating carrier providedwith holes or pockets to receive the blanks to be ground, and a guidearranged adjacent sald grinding wheel and havingan outwardly flaring orrearwardly tapering entrance so that said guide will position said blankrelative to said grinding wheel.

2. The combination with agrinding Wheel,

of a rotating carrier provided with holes or pockets to receive theblanks to be ground and having a geared periphery, a rotating pinionmeshing with the said geared periphery of said carrier, and means forpositioning the blanks inserted in said carrier before they reach saidgrindingwheel.

3. A grinding machine attachment comprising a suitable base, a supportor standard separate from said base but attached thereto, a bracketseparate from said standard but rigidly secured thereto, a rotatingcarrier mounted in said bracketand having holes or pockets to receivethe articles to be ground, and means, also mounted on said bracket, forrotating said carrier.

4. A grinding machine attachment comprising a suitable base, a supportor standard separate from said base but attached thereto, a bracketseparate from said standard but rigidly secured thereto, a rotatingcarrier mounted in said bracket and having holes or pockets to receivethe articles to be ground, said carrier having a geared periphery, ashaft also mounted on said bracket and provided with a pulley, and apinion on said shaft for rotating said carrier.

5. A grinding machine attachment comprising a suitable support orstandard, a bracket attached to said support or standard, a rotatingcarrier mounted in said bracket and having holes or ockets to receivethe blanks to be groun means also mounted in said bracket for rotatingsaid carrier, and guiding means, also mounted in said bracket, forpositioning the blanks inserted in said carrier before they reach thegrinding wheel or wheels of the grinding machine.

In testimony whereof I afiix my signature.

LEWIS R. HEIM.

